Ecological Psychology Phd studdent and Director of Strategy for Transforming Sports Gray Thomas joins Jamie to discuss the concepts of ecological dynamics and constraints-led approach in coaching, emphasizing the importance of adapting behavior based on the relationship between the player, environment, and task. The conversation explores the challenges of adopting an evidence-based approach in youth lacrosse and the need for coaches to focus on time on task and small-sided activities. The 80-20 split between contextual activities and stick work drills is discussed, along with the importance of changing and officiating constraints. The conversation concludes with the significance of understanding the phases of the game and the principles of play as the true fundamentals of lacrosse.